System for treating hydrocarbon oils



F. E. WELLMAN AND F. HLSIBLEY. brSTEMFOR TREATING HYDROCARBON OILS.

APPLICATION FILED OCT. 19. 19:6.

1 3 35 ?70 1 Patented Apr. 615, 1.929;

stem?) f mPMatm-e superheated s/e ma} P0 m acE for inifl'a) "Firing up only.

ooooooo 5 0000000 00000000 j ooooooo-vo 2x0 000000 igooooooo attoznzq heirs FRANK E. -WELLMAN AND FREDERIJ-K H. SIBLEY, 0E KANSAS CITY, KANSAS, ASSIGJORS TO THE KANSAS CITY GASOLINE COMPANY, OF KANSAS CITY, KIRINSAS, A CQRPORATZQN OE KANSAS.

SYSTEM F018, TREATING HYIPRGGARBON OILS.

Specification 0:? Letters Eatent.

Patented Apr. 6, 1926.

Application filed (bomber 19, 1515. Serial No. 126,629.

.To all whom it maybwzcern: 7

Be it known that we, FRANK E. Wm-wily Y and l unoenron H. SIBLEY, citizens of the United States, residing at Kansas City, in the county of 'Wy'andotte and State of Kensas have invented certain new and useful Improvements in Systems for Treating Hydrocarbon Oils, of which the following is a specification, reference being had therein to the accompanying drawing. A

This iiwentien relates to a system for cracking hydrocarbons in which superheated steam is used as the agency for conveying and imparting the necessary heat to the cracking coil or still containing the oil in either liquid or vapor form;

Our invention has for its object to eliect a certain economy on fuel and elliciency in operation by using the exhaust steam from the cracking coil, chamber for heating or vaporizing or both, the feed water in the boiler, Ancillary features will appear from the specific description hereinafter.

Vi e attain our object by using a steam boiler to receive and vaporize. the feed water, a superheater to receive the steam from the boiler and raise the temperature to the desired point, a steam jacket or shell around the cracking coil taking its steam from the preheate and exhausting through a suitable pipe line into lhe heating tubes of the boiler, which in turn exhaust through a steam trap from which the water of condensation may be taken up by the boiler feed pump and mingled with the cold feed water supplied to the boiler.

A furnace, indicated by an oil nozzle ll, or other auuiliary heating means should be provided for the boiler, but ordinarily this should not be necessary during operation, as the temperature of the exhaust steam from the cracking coil chamber would be not less than (300 degrees F. i

In the accompanying drawing,

Figure 1 is a diagram showing the arrangement of the system.

' Fig. 3 .shows a modified form of the boiler.

Fig. 3 is a sectional View of the boiler in lieferring to the drawlngs, 1 is a cracking cOil inclesed in the shell 2. 3 is a pump for pumping liquid or gaseous oil into the cracking 0011. his a steam pipe leading from the cracking coil chamber to the coil 5 which is surrounded with the water to be vaporized. 6 is the exit tube of coil 7 1.:- a steam trap. 8 1s a water pipe for 0011- her 2, The boiler shown in Fig. 2 may be I used. In this, 16 is a steam drum for re- .ceiuing the hot steam from pipe 4. 17 is a; system of tubes under the Water in the boiler through which the hot steam passes to drum 18 having exit tube 6 for conducting the excess steam and condensed Water to the'steam trap 7'.

Thenicthod or operation is as follows: Thehydrocarbon to be treated is forced by purhp 3 into the cracking coil 1. Suitable cracking temperature is maintained in the coil. by means of the highly superheated steam surrounding the coil in the chamber 2. The cracked hydrocarbons'thcn pass to a suitahl'e cooling apparatus through pipe 20, which has a valve inserted therein for the purpose of maintaining pressure. 7

The highly. superheated steam passes from the cracking coil chamber through pipe 4 to the coil 5 where it imparts mostof its heat to the water in boiler 11 and so vaporizes the water. The steam and condensedwater from-coil 5 pass out the pipe 6 to the steam trap 7. The warm water of condensation passes from the steam trap 7 by means of pipe 8-.to the receivingside of pump 10 and 1S pumped into the boiler which may have, a steam pressure of about 10 pounds per square inch. In the boiler 11 the water comes in contact \vitli the hot steam coil 5 and is raised to its boiling point at the pressure employed. The steam thus formed passes by means ofpipe 12 to the super-heater coil 13. Here it is heated to cracking temperature by means of heat derived from the furnace 14, or equivalent a ency, which may be of anyconveuient hyper T he super-heated steam then passes thgough ,pipe 15 into the chamber space album].

the cracking coil 1. Here the steam supplies the proper heat for cracking the oil and passes out through pipe 4 into COll 5 to give up the remainder of its heat to the water in the boiler to' vaporize the same.

In case the boilershown in Figs. 2 and 3 is used, the hot steam from 2 passes through pipe 4 into the drum or head 16 and thence into the tubes 17 situated under the Water in the boiler to be vaporized. While passing through tubes 17 the steam imparts its heat to the water and passes partly condensed into the drum or head 18 from which the excess steam and condensed warm water pass through pipe 6 to the steam trap 7.

It will be understood that the drawing and description herewith presented of the cracking coil, pump or compressor, and pipe line for the oil to be cracked, are rudimentary and merely suggestive as to the apparatus actually required to practise the invention. Those skilled in the art, however, can supply'the necessary elements, such as valves, condensing means, supply and .receiving tanks, etc., and it isto be understood that these elements are implied, and

f the water in theboiler, together with a dis-,

are omitted merely in the interest of siniplicity and clarity. For example, it is very necessary to provide precooling means, and a pressure retaining valve at the discharge end of the still pipe 20, but such elements in themselves form no part 'of'the present invention.

Having thus described our invention what we claim and desire to secure by Letters Patent in the United States is:-

1. In a s stem for treating hydrocarbon oils, a crac ing still, a steam chamber for heating said still, means for passing the hydrocarbons under suitable cracking pressure through said still, a water boiler or vaporizer, a superheater external means for supplying heat to said superheater, pipe connections from said boiler to said superheater, and from the latter to the steam chamber ofthe still, means for conducting the exhaust superheated steam from the still heating chamber'into contiguity with the water in the boiler, and means to force the water and steam from the boiler to'the superheater, to maintain the circulation in the entire heating system.

' 2; In a. system for treating hydrocarbon oils, a cracking still, a steam chamber for heating said still, means for passingfthe hydrocarbons under suitable cracking pressure through said still, a water boiler or vaporizer, a super-heater, external means for supplying heat to said superheater, pipe connections from said boiler to said superheater, and from the latter to the steam chamber of the still, a coil in said boiler, a pipe connection for exhaust steam from the still heating chamber to said coil, to heat the water in the boiler, and a pump connected between the boil', and the exhaust end of the coil Within it, said pump acting to force a circulation of water and steam through the system.

3. in a system for treating hydrocarbon oils, a cracking still, a steam chamber for heating said still, means .ior passing the hydrocarbons under suitable cracking pressure through said still, a water boiler or vaporizer, a superheater, external means for supplying heat to said superheater, pipe connections from said boiler to said superheater, and from the latter to the steam chamber of the-still, a coil in said boiler, a

pipe connection for exhaust steam from the still heating chamber to said coil, to heat charge connection from said heating coil, a. steam trap connected thereto, and a pump connected between the boiler and the exhaust end of the coil Within it, said pump acting to force a circulation ofwater-and steam through the system.

4. Ina system for treating hydrocarbon 'oils,a cracking still, a steam chamber for heating said still, means for passing the hydrocarbons under suitable cracking pressure through said still, a water border or vaporizer, a superheater, external means for supplying heat tosaid superheater, pipe connections from said boiler to said superheater, and from the latter to the steam chamber of the still, a coil in said boiler, and a pipe "connection for exhaust steam from the still heating chamber to said coil,

to heat the water in the boiler, to ether.

with discharge-connections for sai coil, and pressure means to return warm water due to condensation therein, to the boiler, to assist in raising the temperature of the feed-water supplied thereto.

' In testimony whereof we ailix our signatures'.

FRANK E. WELLMAN.

iFB-EDERICK H. SIBLEY. 

